Muffler.



M. KARMINSKI & c. PETERS. MUFFLER.

APPLICATION FILED NOV. 30, 1910.

991,51 5, 1 Patnted May 9,1911.

Inventors: Mm v'm K'armzlmsiv' Clans. Pea/ens 3 their Attorneys,

THE NORM; P'ETERS co., www.1- mm D. cv

MAXIM KARMINSKI AND CHARLES PETERS, OF THOMPSONVILLE, CONNECTICUT.

MUFFLER.

Specification of Letters Patent.

Patented May 9, 1911.

Application filed November 30, 1910. Serial No. 594,847.

To all whom it may concern:

Be it known that we, MAXIM KARMINsKI and CHARLES Pn'rnns, subjects ofthe Emperor of Germany, residing at Thompson ville, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements in Mufflers, of which the following is a specification.

This invention relates to mufllers, and while it is conceivable that amufller embodying our invention can be utilized with advantage in manydifferent connections, it is of especial utility when employed inconjunction with an engine or motor using a gaseous fluid-such asgasolene-for its opera-tion.

Among the objects of the invention are the provision of a simple andcompact device of the character noted which has means for effectuallydeadening the noise of the exhaust, and the elimination of backpressure.

In the drawings accompanying and forming part of the presentspecification, we have illustrated in detail one convenient form ofembodiment of the invention, which to enable those skilled in the'art topractice the same will be fully outlined in the following description,this showing being made to enable those skilled in the art to practicethe invention. From such observations it will be apparent that we do notrestrict ourselves to the disclosure of said drawings and description,as we may depart therefrom in several respects within the scope of ourinvention included in the claims succeeding said description.

Referring to the drawings: Figure 1 is a vertical longitudinal sectionalview of a muffler comprising our invention. Fig. 2 is a horizontallongitudinal sectional view of said muffler, and, Fig. 3 is a crosssection of the same.

Like characters refer to like parts throughout the several figures ofthe drawm s.

lhe muflier preferably involves in its organization a casing, and thiscasing may be of any desirable kind; that shown is denoted in a generalway by 2, and is shown as cylindrical. We have illustrated an engineexhaust pipe 3 connected with the muffler, said pipe serving as asuitable means for conveying the spent gases from a hydrocarbon engineor the like into the muffler. As a suitable means for connecting thedischarge pipe 3 with the muflier body or casing 2, the internallythreaded coupling 4: rigidly connected with the inner head or end of themuffler, may be provided. Said inner head or end is shown having anopening or port 5, and in this opening there is represented fitted thenozzle 6 which is preferably inclosed in the casing 2 and which extendstoward the outer end thereof. While any desirable means may be providedfor holding the nozzle in place, this result can easily be accomplishedby spinning. It will be understood that the exhaust pipe 3 delivers theexhaust from the engine into this nozzle 6. The latter is represented asclosed at its free or forward end, and said forward end and bodypreferably have outlets such as the perforations 7 for the escape of thegases into an expanding chamber into which the said perforated nozzle ortube extends, and by this relation the gases are directed into saidchamber in a number of separated streams or jets, and this at the outsetbreaks up the body of gas and has a muflling elfect. As will hereinafterappear there is a succession or chain of these expanding chambers, andthe gases pass through the first into the second and so on losing theirforce in transit. In the present case there are four of such expandingchambers, and they are denoted respectively by 8, 9, 10 and 11, it beingevident that the nozzle or perforated tube 6 discharges into the firstchamber 8. While these chambers may be of any desirable shape, we preferthat they be spherical, as in this way we can within a relatively smallspace provide for considerable cubical area and the elimination ofangles. While we do not restrict ourselves to the formation of thesechambers of any particular material, we prefer to use aluminum for thispurpose which we have found after experiments is best adapted to ourpurpose, in that the said material possesses a very low resonant'effectby reason of which the gases strike the inner surface of the chamberspractically without noise.

While the several gas expanding chambers may be supported in anydesirable manner, the partition or dividing wall 12 answerssatisfactorily in this connection, said wall, as will hereinafterappear, dividing the easing 2 interiorly into two separate or distinctbut comn'nmicating compartments. The op posite edges of the wallpreferably closely fit the top and bottom of the casing interiorlythereof, said wall preferably having circular openings, all forconvenience de noted by 13, to receive closely the respective sphericalchambers. The two intermediate chambers 9 and 11 have diametricallyopposite ports, while the terminal chambers 8 and 11 have similar portson their inner sides and for sake of simplicity all said ports aredenoted by 1 1. The chambers fit together and their ports in the presentinstance are in line. From this it will be clear that the first chamber8 can deliver its into the communicating second chamber 9, the latterinto the third chamber 10 and the third chamber 10 into the fourthchamber 11. lVhile we have shown four of said chambers, there may becases where this number may be increased or decreased, the invention notrespecting this detail or others. The several chambers are preferablyrigidly united for instance by welding or brazing, to the dividing wall12, so that the wall with the chambers carried thereby presentspractically a unit, and it can be introduced as such into the casing 2.

In practice the outer end of the wall or partition 12 fits firmly orsolidly against the corresponding head of the casing 2, while the innerend of said wall extends short of the inner head of said casing, so thata passage 15, acting practically as a port, connects the twocompartments at opposite sides of said dividing wall. YVe mightdistinguish these two compartments as primary 16 and secondary 17, thesedesignations not being employed because one of the compartments is ofless importance than the other, but simply to more readily explain theapparatus. The exhaust gases from the final chamber 11 are dischargedinto the primary compartment 16 from the final chamber 11, said finalchamber 11 for this purpose having circumferential and lateralperforations 18 which open only in the primary chamber or compartment16, that part of the outer expanding chamber 11 located in the secondarychamber 17 beingimperforate. After the gases have traveled through theseveral expanding chambers 8, 9, 10 and 11 they will leave the latter byway of the perforations 18 and pass into the entering end of the primarychamber 16 and owing to the partition 12 will travel circuitously firstthrough the primary compartment 16 and then into the secondarycompartment 17 by way of the connecting passage 15. Said gases may bedischarged to atmosphere by the pipe 19 connected with the outer end orhead of the casing 2. lVe find that not only can we noiselessly mulllethe exhaust of an engine such as that to which we have hereinbeforereferred, but that the gases when they emerge from the final dischargepipe 19 are practically without power.

hat we claim is:

1. A mutl'ler having a casing, a partition extending longitudinally ofthe casing for dividing the same interiorly into primary and secondarycompartments, a plurality of communicating gas expanding chamberssupported by said partition, means for de livering gas into the firstchamber, the final chamber having means for discharging the into theprimary compartment, the secondary compartment having a discharge portto atmosphere, and a passage connect ing said two compartments, at apoint remote from said port.

2. A mu'tller having a casing, a partition extending lon itudinally ofthe casing and dividing the same interiorly into primary and secondarycompartments, a plurality of communicating gas expanding chamberssupported by said partition, the final chamber having means to dischargethe gas into the primary compartment, the secondary compartment having adischarge port to atmosphere at approximately one end of the casing, anda passage connecting the two compartments at substantially the other endof said casing.

3. A muiiler having a casing, a partition extending longitudinally ofthe casing and dividing the same interiorly into primary and secondarycompartments, a plurality of communicating gas expanding chamberssupported by said partition, means for delivering gas into the firstchamber at the head end of the casing, the final chamber discharging thegas into the primary compartment substantially at the outer end of thecasing, said secondary compartment hav ing a discharge port opening toatmosphere substantially at said outer end, and a passage connecting thetwo compartments approximately at the head end of the casing.

41-. A muli'ler having a series of communieating chambers, a partitiondividing the muliler into interior compartments, means for deliveringgases into one of the chambers, another chamber having outlet meansopening into one of the compartments, the other compartment having anoutlet to atmosphere, and a passage connecting the two compartments.

A mutller comprising a casing, a partition in said casing fittingagainst one end thereof and extending short of the other, a In testimonywhereof We aflix our signaseries of connecting chambers supported bytures in presence of tWo Witnesses. sald partltlon, a perforated nozzleextend- MAXIM KARMINSKI. mg 1nto the first chamber, the final cham- 5her having perforations located in one of the CHARLES PETERScompartments near one end thereof, the Witnesses: other compartmentapproximately at the HEATH SUTHERLAND, same end having an opening toatmosphere. F. E. ANDERSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents, Washington, D. G.

